Multi-colour bipolar electrochemiluminescence for heavy metal ion detection

Moghaddam, M.R.A.; Carrara, Serena; Hogan, Conor F.

doi:10.1039/c8cc08472f

Cited by 67 publications

(41 citation statements)

References 27 publications

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“…As noted in previous studies (Doeven et al, 2012;Cao et al, 2020), the number of luminophores in multi-color ECL may be limited by the broad emission spectra of the metal complexes. The difference in their oxidation potentials (Table 1), however, may also enable "potential-resolved" ECL, which has recently been exploited to expand the scope of multi-color systems (Doeven et al, 2015b;Guo et al, 2018;Moghaddam et al, 2019;Bouffier and Sojic, 2020).…”

Section: Electrogenerated Chemiluminescencementioning

confidence: 99%

Water-Soluble Iridium(III) Complexes Containing Tetraethylene-Glycol-Derivatized Bipyridine Ligands for Electrogenerated Chemiluminescence Detection

et al. 2020

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Four cationic heteroleptic iridium(III) complexes containing a 2,2 ′-bipyridine (bpy) ligand with one or two tetraethylene glycol (TEG) groups attached in the 4 or 4,4 ′ positions were synthesized to create new water-soluble electrogenerated chemiluminescence (ECL) luminophores bearing a convenient point of attachment for the development of ECL-labels. The novel TEG-derivatized bipyridines were incorporated into [Ir(C ∧ N) 2 (R-bpy-R ′)]Cl complexes, where C ∧ N = 2-phenylpyridine anion (ppy) or 2-phenylbenzo[d]thiazole anion (bt), through reaction with commercially available ([Ir(C ∧ N) 2 (µ-Cl)] 2 dimers. The novel [Ir(C ∧ N) 2 (Me-bpy-TEG)]Cl and [Ir(C ∧ N) 2 (TEG-bpy-TEG)]Cl complexes in aqueous solution largely retained the redox potentials and emission spectra of the parent [Ir(C ∧ N) 2 (Me-bpy-Me)]PF 6 (where Me-bpy-Me = 4,4 ′ methyl-2,2 ′-bipyridine) luminophores in acetonitrile, and exhibited ECL intensities similar to those of [Ru(bpy) 3 ] 2+ and the analogous [Ir(C ∧ N) 2 (pt-TEG]Cl complexes (where pt-TEG = 1-(TEG)-4-(2-pyridyl)-1,2,3-triazole). These complexes can be readily adapted for bioconjugation and considering the spectral distributions of [Ir(ppy) 2 (Me-bpy-TEG)] + and [Ir(ppy) 2 (pt-TEG)] + , show a viable strategy to create ECL-labels with different emission colors from the same commercial [Ir(ppy) 2 (µ-Cl)] 2 precursor.

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Section: Electrogenerated Chemiluminescencementioning

confidence: 99%

Water-Soluble Iridium(III) Complexes Containing Tetraethylene-Glycol-Derivatized Bipyridine Ligands for Electrogenerated Chemiluminescence Detection

et al. 2020

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“…We have applied this miniaturized ECL instrument for the profiling of heavy metal ions by using conventional C-BPE structure from Scheme 2B with ECL reagents (Ru (bpy) 3 2 + and TPA) based on the deposition method in the reference [38]. The sensing principle and experiment conditions for the detection Cu 2 + are detailed in SI.…”

Section: Prospect In Heavy Metal Detectionmentioning

confidence: 99%

Development of Miniaturized Electrochemiluminescence Instrument using Multi‐pixel Photon Counter as the Optical Detector

Dai

Zhao

et al. 2020

Electroanalysis

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We developed a miniaturized electrochemiluminescence (ECL) instrument coupled with a light‐emitting diode‐based bipolar electrochemical sensor (LED‐BPES). This instrument composes of a microcontroller circuit, a power supply circuit, a potentiostat, an optical detecting circuit, and a communication circuit. The multi‐pixel photon counter (MPPC), which is low‐cost, small‐size, and wide‐range in optical measurements, is chosen as the optical detector. The LED‐BPES composes of a disposable screen‐printed carbon electrode (SPCE) and a surface‐mount red LED. Depended on the closed bipolar electrode (C‐BPE) structure, the LED‐BPES not only avoids the employment of unstable and complex ECL reactions but also offers a cost‐effective alternative for the over‐priced ECL reagents by using a mini‐size commercial LED as the luminescent producer. The combination of MPPC and LED‐BPES helps to set up the simplified and downsized instrument system with low price and high efficiency. The presented instrument coupled with LED‐BPES works excellent in electroactive molecules detection and has great potential in the application of heavy metal ions detection.

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“…To date, an increasing number of applications in analytical chemistry and materials science were already proposed . For example, the design of tailored surface gradients or particles, single cell‐capture devices, polymer light‐emitting electrochemical cells and various analytical platforms were reported . Analytical approaches based on BPE very often involve metal electrodes (like Pt, Au, or Ag) that are screen‐printed on glass and integrated inside a microchannel .…”

Section: Introductionmentioning

confidence: 99%

Remote Actuation of a Light‐Emitting Device Based on Magnetic Stirring and Wireless Electrochemistry

et al. 2020

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We propose a straightforward access to a rotating light‐emitting device powered by wireless electrochemistry. A magnetic stirrer is used to rotate a light‐emitting diode (LED) due to the intrinsic magnetic properties of the tips that contain iron. At the same time, the LED is submitted to an electric field and acts as a bipolar electrode. The electrochemical processes that are coupled on both extremities of the LED drive an electron flow across the device, resulting in light emission. The variation of the LED alignment in time enables an alternating light emission that is directly controlled by the rotation rate. The stirring also enables a continuous mixing of the electrolyte that improves the stability of the output signal. Finally, the LED brightness can readily reveal a change of chemical composition in the electrolyte solution.

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Multi-colour bipolar electrochemiluminescence for heavy metal ion detection

Abstract: We report a new approach to heavy metal ion detection based on bipolar electrochemiluminescence (BP-ECL), which is simple and low cost yet highly sensitive.

Cited by 67 publications

References 27 publications

Water-Soluble Iridium(III) Complexes Containing Tetraethylene-Glycol-Derivatized Bipyridine Ligands for Electrogenerated Chemiluminescence Detection

Water-Soluble Iridium(III) Complexes Containing Tetraethylene-Glycol-Derivatized Bipyridine Ligands for Electrogenerated Chemiluminescence Detection

Development of Miniaturized Electrochemiluminescence Instrument using Multi‐pixel Photon Counter as the Optical Detector

Remote Actuation of a Light‐Emitting Device Based on Magnetic Stirring and Wireless Electrochemistry

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